Haier 40D3505 Won’t Turn On

This fairly new TV had an issue where it wouldn’t turn on.  Searching on ebay for this model, I found a preprogrammed eeprom from shopjimmy which suggests this model may suffer from eeprom failures.  To test if the eeprom is at fault, I cooled it with a can of inverted duster spray with the tv unplugged.  Plugging it in, the tv turned on.  The faulty IC is located beside the main processor and placed at an angle (UF1 designator). The part number is 25L3206E.  I ordered the part from Shopjimmy on ebay, replaced it and TV is working.

For future repairs, I have ordered a cheap USB eeprom programmer on ebay (search CH341A).  This has a DIP socket but surface mount SOP8 adapters are available.  They come in two widths – narrow is for 150 mil wide chips and wide is for 200 mil.  The IC for this TV is a wide version.

 

Leave a Reply